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Matt says there are consistent reports of Alexa and other devices taking conversations as requests for ordering - and placing the orders without your knowledge, reports MailOnline .

That means that if you sit in front of Alexa and discuss whether you should buy an iPad, an iPhone X, a new 54" TV or a laptop you could find all those devices unexpectedly arriving at your door.

Alexa plugs directly into Amazon and can place orders for customers whose card details are stored.

Matt said: "With Christmas approaching I can foresee many people answering doors to delivery drivers with packages that the person knows nothing about – and which their 'home helper' has ordered for them.